Shrikes

species: 
Great Grey Shrike
scientific name: 
Lanius excubitor
notes: 

Yellow ring wiht a black two alpha-numeric code (on one leg) and metal ring (on right leg).

note 1 :

website sighting submit: 
Ornithological Station, Museum and Institute of Zoology of the Polish Academy of Sciences.
email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Yellow [Y]
colour-ring code (of the c-ring): 
Two alpha-numeric code (2 letters/numbers).
countries where ringed: 
Poland.